video with thumbnail test5

Author: ayatakesi

docs/tips/TheEmacsWindowManagementAlmanac.md

@@ -456,7 +456,7 @@ ace-windowの使用時に`?`を押下すると、ディスパッチメニュー
 ![ace-dispatch-demo.mp4](https://karthinks.com/img/ace-dispatch-demo.mp4)
 -->
 
-[![](https://i.imgur.com/7OFRShA.mp4)](https://karthinks.com/img/ace-dispatch-demo.mp4)
+[![ace-window dispatch demo](https://i.imgur.com/7OFRShA.mp4)](https://karthinks.com/img/ace-dispatch-demo.mp4)
 
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